Rob Reiner and Michele Singer Reiner were found dead on Sunday with stab wounds, source close to the family told NBC News.

Prosecutors in California will file murder charges against Nick Reiner, the younger son of Rob Reiner and Michele Singer Reiner, Los Angeles County District Attorney Nathan Hochman said Tuesday.

Hochman said his office is expected to file two counts of first-degree murder with a special circumstance alleging multiple murders on Tuesday afternoon. Nick Reiner also faces a special allegation that he used a knife in the killings, Hochman told reporters.

Nick Reiner faces a maximum sentence of life without the possibility of parole or the death penalty if convicted, he said.